package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;

import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;

import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author 猛在王
 * @version 1.0
 * @date 4/6/2024 上午11:01
 * @description OrderServiceImpl
 * @since 1.0
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    
    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.shop.baidu}")
    private String ak;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO orderSubmit(OrdersSubmitDTO ordersSubmitDTO) {
        List<OrderDetail> orderDetails = new ArrayList<>();

        //1.处理异常，判断传递过来的参数中：购物车，地址簿是否为空，为空则抛出异常
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            //地址簿为空
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list == null || list.size() == 0) {
            //购物车为空
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //2.向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setUserId(userId);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        //设置地址
        String address = addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail();

        orders.setAddress(address);
        //插入订单
        orderMapper.insert(orders);

        //向订单详细表插入多条数据
        list.forEach(cart->{
            OrderDetail orderDetail = new OrderDetail();//订单详情
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前关联的订单id
            orderDetails.add(orderDetail);
        });
        orderDetailMapper.insertBatch(orderDetails);

        //清空购物车中的数据
        shoppingCartMapper.deleteAll(userId);
        //返回OrderSubmitVO对象
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        /*//调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.      pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }*/

        JSONObject jsonObject = new JSONObject();

        jsonObject.put("code", "ORDERPAID");

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改

        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付

        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单



        //发现没有将支付时间 check_out属性赋值，所以在这里更新

        LocalDateTime check_out_time = LocalDateTime.now();

        String orderNumber = ordersPaymentDTO.getOrderNumber();

        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderNumber);

        //通过websocket向客户端浏览器推送消息 type orderId content
        System.out.println(orderNumber);

        Orders orders = orderMapper.getByNumber(orderNumber);
        Map map = new HashMap();
        map.put("type",1); //1表示来单提醒，2表示用户催单
        map.put("orderId",orders.getId());
        map.put("content","订单号："+orderNumber );
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        return vo;
    }

    /**
     * 支付成功，修改订单状态  不可用
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

    }

    /**
     * 历史订单查询
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    public PageResult pageQueryOrders(int pageNum, int pageSize, Integer status) {
        //开启分页查询
        PageHelper.startPage(pageNum,pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());

        //分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list= new ArrayList<>();

        //查询出订单明细，并封装入OrderVO
        if (page != null && page.size()>0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();

                //查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),list);
    }

    /**
     * 查询订单详情
     * @param id
     * @return
     */
    public OrderVO getOrder(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);
        //查询订单详情
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        //数据拷贝
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    /**
     * 取消订单
     * @param id
     */
    public void cancelOrder(Long id) {
        //查询订单
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB == null) {
            //订单不存在
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //要判断订单的状态1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            //订单状态为：3已接单 4派送中 5已完成 6已取消,不能取消
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setUserId(BaseContext.getCurrentId());
        orders.setId(id);

        // 订单处于待接单状态下取消，需要进行退款
/*        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }*/
        //更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */
    public void repetition(long id) {
        //根据id查询当前订单
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();
        //创建购物车集合
        List<ShoppingCart> shoppingCartList =  new ArrayList<>();
        //遍历订单详情
        for (OrderDetail orderDetail : orderDetails) {
            ShoppingCart shoppingCart = new ShoppingCart();
            //属性拷贝
            BeanUtils.copyProperties(orderDetail,shoppingCart);
            //设置用户id
            shoppingCart.setUserId(userId);
            //设置添加时间
            shoppingCart.setCreateTime(LocalDateTime.now());
            //将购物车放进集合中
            shoppingCartList.add(shoppingCart);
        }
        //批量插入购物车数据
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 订单分页查询
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开启分页查询
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);


        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        //检查orderList是否为空
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                //属性拷贝
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                //获取订单包含的菜品，以字符串形式展示
                String orderDishes = getOrderDishes(orders);
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }

        }

        return new PageResult(page.getTotal(),orderVOList);
    }

    /**
     * 设置返回前端的菜品名字
     * @param orders
     * @return
     */
    private String getOrderDishes(Orders orders) {
        Long ordersId = orders.getId();
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(ordersId);
        String dishNames = "";
        for (OrderDetail orderDetail : orderDetailList) {
            String dishName = orderDetail.getName();
            Integer number = orderDetail.getNumber();
            dishNames +=(dishName + "*" +number+";");
        }
        return dishNames.substring(0,dishNames.length()-1);
    }


    /**
     * 订单状态统计
     * @return
     */
    public OrderStatisticsVO statusStatistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toTakeOrder = orderMapper.getStatus(Orders.TO_BE_CONFIRMED);
        Integer toDelivery = orderMapper.getStatus(Orders.CONFIRMED);
        Integer toDelivering = orderMapper.getStatus(Orders.DELIVERY_IN_PROGRESS);

        //给对象属性赋值
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toTakeOrder);
        orderStatisticsVO.setConfirmed(toDelivery);
        orderStatisticsVO.setDeliveryInProgress(toDelivering);
        return orderStatisticsVO;
    }

    /**
     *查询订单详情
     * @param id
     * @return
     */
    public OrderVO detail(Long id) {
        OrderVO orderVO = new OrderVO();

        //查询订单
        Orders orders = orderMapper.getById(id);
        //属性拷贝
        BeanUtils.copyProperties(orders,orderVO);
        //查询订单详情
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    /**
     * 商家接单
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 商家拒单
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        //查询订单
        Orders ordersDB = orderMapper.getById(ordersRejectionDTO.getId());
        //判断订单是否存在，只有待接单状态下才能拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //修改订单
        log.info("开始退款");
        Orders orders = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .payStatus(Orders.REFUND)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 商家取消订单
     * @param ordersCancelDTO
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        //查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //判断订单是否为空，
        if (ordersDB == null ){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //只有已接单或者派送中才能取消
        if (ordersDB.getStatus().equals(Orders.CONFIRMED) || ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            log.info("开始退款");
            //设置退款订单id，订单状态，支付状态，取消原因，取消时间
            Orders orders = Orders.builder()
                    .id(ordersCancelDTO.getId())
                    .status(Orders.CANCELLED)
                    .payStatus(Orders.REFUND)
                    .cancelReason(ordersCancelDTO.getCancelReason())
                    .cancelTime(LocalDateTime.now())
                    .build();
            orderMapper.update(orders);
        }else {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
    }

    /**
     * 派送订单
     * @param id
     */
    public void delivery(Long id) {
        //查询订单
        Orders ordersDB = orderMapper.getById(id);

        //判断订单是否为空，只有待派送的订单才能派送
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(long id) {
        //查询订单
        Orders ordersDB = orderMapper.getById(id);

        //判断订单是否为空，订单状态为4才能点击完成订单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //更新订单状态
        Orders orders = Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .deliveryTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 用户催单
     * @param id
     */
    public void reminder(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);
        //检查订单是否存在
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        Map map =new HashMap();
        map.put("type",2);
        map.put("orderId",orders.getId());
        map.put("content",orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

}





















